Black screen after installing new GPU

Feb 22, 2018
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I searched similar topic on this forum but couldnt find one close to my issue.

I just purchased asus strix 1070 and replace my asus gtx 970. But when I tried to power on the computer, I got black screen. I removed it and switch it back to 970, it was working fine again. So I thought maybe i didnt insert the 1070 properly and tried to do it again. Unfortunately I still got black screen.

Then, again, i removed the 1070 and switch it back to 970, but this time i got black screen just like 1070. I tried to remove all gpu, and use the onboard one (hdmi) but also got black screen.

I tried to clear the cmos (removing the battery) and still no luck for both onboard and gpu :(

I am clueless now.

For your info, i did not hear any beep and my cpu cooler and the other fans looks like they working normal when i turned on the pc.

My MB is asus z170 pro gaming.

I need help :(